Privacy policy

Effective date: 8 October 2026

This policy covers Exoplanet Chess, its iOS and Android apps, and the website at www.exoplanetchess.com. Mesfin Shibeshi operates Exoplanet Chess. For privacy questions or requests, email solo91963@gmail.com.

1. Playing without an account

You do not need to register or provide your name, email address or phone number to play. Computer play is available offline. Online play uses a game code instead of an account.

2. Information stored on your device

The app stores game positions, move histories, game settings, room codes and session access tokens locally to let you resume and replay games. The recent-game list keeps up to 24 games. The website also uses local storage and a service-worker cache for saved games and offline access. This local storage is not used for advertising or tracking you across other apps or websites.

Offline play does not require sending moves to our server. When you use connected features, some game information is also stored on the server as described below.

3. Online games and saved records

For online play, we process a randomly generated room code, randomly generated player access tokens, your selected side, board position, moves, time controls, game status, result and timestamps. These records allow players to join, synchronize, resume and replay a game. Connected computer games can also send their positions and move history to the server for saving.

Your opponent can see the game position and actions. Someone who has the room code may be able to access its game record, so share codes only with people you intend to play with. If you choose to feature a game using the website, its moves and result become publicly viewable in Featured Games. Contact information and player access tokens are not included in the public featured-game list.

4. Comments and support

Using the website contact form is optional. If you submit it, we collect and store the email address, phone number and comment you enter, together with a message identifier and submission time. We use this information to review feedback, answer questions and support the game. Contact messages are not displayed publicly. If you email us directly, we receive your email address, message and any information you choose to include.

5. Service providers and technical information

Our website and online game service use OpenAI Sites hosting and Cloudflare infrastructure, including server-side database storage. These providers process information needed to deliver and protect the service. Connecting to an online service exposes technical information such as your IP address, request time and browser or device information to its infrastructure; providers may process operational and security logs under their own retention practices.

We use providers to operate and protect the service, and require personal information processed on our behalf to receive protection consistent with this policy and applicable law. We do not sell personal information or use game or contact information for targeted advertising. The app does not include advertising or analytics SDKs and does not request access to your contacts, precise location, camera or microphone.

Links to YouTube and other external services open those services. Their own privacy policies apply when you visit them. App stores also handle downloads and any information you provide to them under their own policies. Information may be processed outside your country by our hosting and email providers.

6. Retention and deletion

Local saved games remain until they are replaced by newer entries or the app's local data is cleared. Deleting the iOS app removes its local app data; on Android, you can clear the app's storage or uninstall it. For website data, clear this website's stored data in your browser. Clearing local data does not delete server records.

Active server rooms become eligible for cleanup after seven days without an update. Cleanup runs periodically during game creation, so removal may happen later. Archived game records, featured games and contact messages currently have no automatic expiry and remain until removed, including in response to an applicable deletion request. Email and infrastructure logs are subject to their providers' retention practices. Copies required by law or needed to resolve a dispute may be retained for that purpose.

To request access, correction, removal of a featured game, or deletion of server game records or contact messages, email solo91963@gmail.com. Include the game code or public game link, or the email address and approximate date of your contact message, so we can locate the information. Do not send passwords or private player access tokens. We may ask for limited information to verify that the request concerns you or your game.

7. Your choices and security

You can play offline, avoid submitting contact details, stop using online features and clear locally stored data. You can request deletion as explained above. Where consent is the basis for processing, you may withdraw it by contacting us; withdrawal does not undo processing already carried out. Depending on your location, you may have additional privacy rights or the right to complain to your local data-protection authority.

We use HTTPS for online connections and player access tokens to authorize changes to online games. No system is completely secure. Keep your device and game codes secure, and avoid putting sensitive personal information in contact messages.

8. Children and policy updates

We do not knowingly request personal contact information from children under 13. Children should use offline play or involve a parent or guardian before using online features or sending a message. If you believe a child has submitted personal information, contact us so we can investigate and remove it where appropriate.

We will update this page and its effective date when our data practices change. Questions and privacy requests can be sent to Mesfin Shibeshi at solo91963@gmail.com.